2. In Drosophila, an X-linked recessive mutation, scalloped (sd), causes irregular wing margins. What F1 and F2 results if (a) a scalloped female is crossed with a normal male; (b) a scalloped male is crossed with a normal (homozygous) female?
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When they are crossed, the F1 generation will have the following genotypes: - Female offspring: sd/X (scalloped/normal) - Male offspring: sd/Y (scalloped) So, the F1 generation will have 50% scalloped females and 50% scalloped males. Show more…
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In Drosophila, an X-linked recessive mutation, scalloped (sd) causes irregular wing margins. Diagram the $F_{1}$ and $F_{2}$ results if $(a)$ a scalloped female is crossed with a normal male; (b) a scalloped male is crossed with a normal female. Compare these results with those that would be obtained if the scalloped gene were autosomal.
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